allprojects {
     repositories {
      ...
      maven { url 'https://jitpack.io' }
      }
    }

   dependencies {
       implementation 'com.gitee.jiangjiesheng:androidapp_preservation:v1.0.5'
   }

    public class MyApplication extends Application {
        @Override
        public void onCreate() {
            super.onCreate();
            KeepAliveManager.initWithApplicationContext(this.getApplicationContext(),false);//最好放在application中初始化
        }
    }

  KeepAliveManager keepAliveManager = KeepAliveManager.getInstance(this);//获取实例

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        keepAliveManager.setKeepAliveManagerStatusListener(new KeepAliveManager.KeepAliveManagerStatusListener() {
            @Override
            public void onUserPresent() {
                Toast.makeText(SportsActivity.this, "用户解锁了", Toast.LENGTH_LONG).show();
            }
        });
        keepAliveManager.addRestartActivity(this.getClass()); //这里就是添加了受保护的Activity
    }

   keepAliveManager.startKeeper();

   keepAliveManager.stopKeeper();

    @Override
    protected void onDestroy() {
        super.onDestroy();
        keepAliveManager.stopScreenListenerOnDestroy();
    }